LG Electronics C Series manual Rpm = ⎜

Chapter 7. Function list

Function group 2

LED

Parameter

Min/Max

Description

Factory

Adjustable

Page

display

Name

Range

defaults

during run

H51

[P gain for

0/999.9

ƒ

This parameter sets the gains for the

300.0

O

10-8

PID controller]

[%]

PID controller.

H52

[Integral time

0.1/32.0

1.0

O

10-8

for PID

[sec]

controller

(I gain)]

H53

Differential

0.0 /30.0

0.0

O

10-8

time for PID

[sec]

controller

(D gain)

H54

F gain for PID

0/999.9

ƒ

This is the Feed forward gain for the PID

0.0

O

10-8

controller

[%]

controller.

H55

[PID output

0/400

ƒ

This parameter limits the amount of the

60.0

O

10-8

frequency

[Hz]

output frequency thru the PID control.

limit]

ƒ

The value is settable within the range of

F21 – [Max frequency] and H23 – [Start

frequency].

H70

[Frequency

0/1

0

The Accel/Decel time is the time that

0

X

9-10

Reference for

takes to reach the F21 – [Max

Accel/Decel]

frequency] from 0 Hz.

1

The Accel/Decel time is the time that

takes to reach a target frequency

from the run frequency.

H71

[Accel/Decel

0/2

0

Unit: 0.01 second.

1

O

9-11

time scale]

1

Unit: 0.1 second.

2

Unit: 1 second.

H72

[Power on

0/13

ƒ

This

parameter selects the parameter to

0

O

11-2

display]

be displayed on the keypad when the input

power is first applied.

0

Frequency command

1

Accel time

2

Decel time

3

Drive mode

4

Frequency mode

5

Multi-Step frequency 1

6

Multi-Step frequency 2

7

Multi-Step frequency 3

8

Output current

9

Motor rpm

10

Inverter DC link voltage

11

User display select

12

Fault display

13

Direction of motor rotation select

H73

[Monitoring

0/2

ƒ

One

of the following can be monitored

0

O

11-2

item select]

via vOL - [User display select].

0

Output voltage [V]

1

Output power [kW]

2

Torque [kgf ⋅ m]

H74

[Gain for

1/1000

ƒ

This parameter is used to change the

100

O

11-1

Motor rpm

[%]

motor speed display to rotating speed

display]

(r/min) or mechanical speed (m/mi).

			⎛ 120 ⋅ f		⎞		H 74
			RPM = ⎜		⎟	⋅
				H 31			100
			⎝		⎠
H79	[Software	0/10.0	ƒ This parameter displays the inverter					X.X	X
	version]		software version.
H81	[2nd motor	0/6000	ƒ This parameter is active when the					5.0	O	10-
	Accel time]	[sec]	selected terminal is ON after I20-I24 is set							16
			d

50